import { requireConfigValue } from '../../isomorphic-config';
import Cookies from 'js-cookie';
import type { IOAuthToken } from '@spree/storefront-api-v2-sdk/types/interfaces/Token';
import UserTokenResponseParseError from '../../errors/UserTokenResponseParseError';

export const getUserTokenResponse = (): IOAuthToken | undefined => {
  const stringifiedToken = Cookies.get(requireConfigValue('userCookieName') as string);

  if (!stringifiedToken) {
    return undefined;
  }

  try {
    const token: IOAuthToken = JSON.parse(stringifiedToken);

    return token;
  } catch (parseError) {
    throw new UserTokenResponseParseError('Could not parse stored user token response.');
  }
};

/**
 * Retrieves the saved user token response. If the response fails json parsing,
 * removes the saved token and returns @type {undefined} instead.
 */
export const ensureUserTokenResponse = (): IOAuthToken | undefined => {
  try {
    return getUserTokenResponse();
  } catch (error) {
    if (error instanceof UserTokenResponseParseError) {
      removeUserTokenResponse();

      return undefined;
    }

    throw error;
  }
};

export const setUserTokenResponse = (token: IOAuthToken) => {
  const cookieOptions = {
    expires: requireConfigValue('userCookieExpire') as number
  };

  Cookies.set(requireConfigValue('userCookieName') as string, JSON.stringify(token), cookieOptions);
};

export const removeUserTokenResponse = () => {
  Cookies.remove(requireConfigValue('userCookieName') as string);
};